Method of making wire-glass.



No..'736,3l0. PATENTED AUG. 1l',y 1903 J. A. VSWEARER Az` C. E. TGYNBEE.

METHOD 0F MAKING WIRE GLASS.

APPLICATION FILB) MAY 23. 1902.

No MODEL.

WITNESSES INVENTORS,

Wu Mmm NITED STATES ratented August 11,1903.

PATENT FFICE.

JAMES A. SWEARER, OF BEAVER, AND CHARLES E. TOYNBEE, OF PORT ALLEGHENY,PENNSYLVANIA, ASSIGNORS, BY MESNE ASSIGNMENTS, TO 'THE MISSISSIPPI mWIREGLASS COMPANY,YOF JERSEY CITY, NEW JERSEY, CORPORATION OF NEW JERSEY.

METHOD OF MAKING WIRE-GLASS.

SPECIFICATION forming part of Letters Patent No. 736,310, dated August11, 1903.

Application filed May 23, 1902. Serial No. 108,626. (No specimens.) i

of Pennsylvania, citizens of the United States,

V have invented or discovered new and useful Improvements iuMethods ofMaking Glassu ware, of which the following is a specication.

The ligure shows in longitudinal section one form of apparatus formaking wire-glass by our method. p

Our invention relates to the manufacture `of glass with a wire-nettingor trellis embedded therein. 4

It has been proposed to start the' first layer with the wire embedded inthe top thereof and then pour and roll the second layer on the first assoon as the leading-rollhas passed sufficiently far to permit the secondpouring. In this process the trellis is embedded in the first layersimultaneously with its formation and while this layer is still toofluid to support the trellis without its becoming embedded. To theiirstlayer in substantially this condition the second layer is applied,the trellis being between the two layers of glass before either hasbecome set 0r chilled-to any appreciable' d egree.

By our method the trellis is not applied until the first layer willsupportit. We embed the trellis in the under side of the upper layer andapply the two to the set or chilled surface of the first layer.

In the drawing, l represents the castingbed, 2 the leading-roll, andSthe finishingroll. 4 is a chute for the trellis 5 and terminates ashort distance behind the nnishingroll 3. 6 and 7 are the usual knivesor guides for the melted glass.

The operation is as follows: A batch of glass is poured behind theleading-roll 2 at 8, and the table 1 Kis moved to the right, asheet orlayer 9 of glass being formed. A second pouring of glass is made at 10behind the roll 3. When the advanced end ot' the sheet 9 reaches thesecond pouring, the trellis is introduced in front of the pouringr andthe roll 3 rolls out on top of the sheet 9 a second layer with thetrellis embedded in the latter. The second layer with the trellis is notapplied until the first layer is sufficiently hard to permit the trellisto lie on its surface without being embedded. therein or until after thefirst layer has been completed.

It is clear that the table may be stationary, While the rolls with theirknives andthe chute lnay be movable, the process being the same ineither case.

It is to be noted that by our process the trellis is not exposed to theoxidizing action of the air after it has been assembled with the glass,as is the case Where the trellis is embedded in the first layer' by theleadingroll. When the trellis is thus embedded with its upperincandescent surface exposed. to the air in the space between theleading-roll and the second pouring of glass, its upper surface is darkwith scale and its life is burned out and its utility impaired.Furthermore, during the interval from the time the embedded trellisleaves the first roll until it arrives Vat the second pouring thetrellis becomes melted, and as it enters the second pouring the meltedmetal smears the glass, rendering it unsightly.

If the second pouring is made before the rst layer is sufficiently hard,asis done when the second pouring is made as soon as possi` ble afterthe leading-roll has passed, the trellis will not be rigidly held in thefirst layer when the second layer is applied, the result being that thetrellis is distorted and its level disturbed.

Having described our invention, what We claim isl. The method of makingwire-glass sheets which consists in rolling the lower half of the sheet,and, after the same has become sufficiently hard to support the trellis,rolling the second half of the sheet and simultaneously applying thetrellis embedded in the latter.

2. The method of making wire-glass sheets which consists in rolling thelower half of the sheetin substantially a horizontal position,

and then rolling thereon the second sheet and simultaneously feeding thetrellis through the simultaneously applying the trellis thereto. secondpouring, so that it is embedded in the 3. The method of makingwire-glass sheets second half. which consists in rolling the lower halfof the Signed at Pittsburg, Pennsylvania, this x5 sheet, and after thesheet has become suffll 21st day of May, 1902. oiently hard to supportthe trellis rolling the' second halt' and simultaneously applying thetrellis introduced therein between the rolls.

4. The method of making Wire-glass sheets which consists in rolling thelower halt' of the sheet, then rolling the second half thereofandWitnesses:

F. N. BARBER, A GEO. H. HARVEY.

